... and improve the transparency and heat resistance of glass. Products in the enamel, the enamel can not easily fall off and ... make it shine. 2)In the special optical glass, borax Glass fiber, non-ferrous metal welding agent, jewelry adhesives, printing and dyeing ... with borides can be obtained by the borax. They are in metallurgy, iron and steel, machinery, military, tools, paper, tubes, chemicals ...